Suggest some tweeters!

I have a pair of Faital Pro W8N8-150's in my doors and have been trying to get my ID horns to fit, but I am about ready to throw in the towel. I would be able to get them to fit if I cut my floor vent ducts, but that is about where I draw the line, LOL.

I have the Faital Pro's powered on 2 channels of my Zapco 1000.4, the other 2 channels are open for the tweeters.

Looking for a large format tweeter that can handle a low crossover point of about 1.5khz to 2khz. Any suggestions??